Bicycle-pump.



No. 636,522. Patented Nov. 7, |899. A. B. GUINNIP.

BICYCLE PUMP.

'lic t'o (App a. 1 n led June 3, 1899 view of the device.

l UNITED STATES PATENT OFFICE.

ARTHUR B. GUINNIP, OF SENECA. FALLS, NEW YORK, ASSlGNOR OF ONE- HALF TO A. M. NELSON, OF SAME PLACE.

BICYCLE-PUMP.

SPECIFICATION forming part of Letters Patent No. 636,52 2, dated November '7, 1899.

Application filed June 3, 1899. Serial No. 719,281. (No model.)

To @ZZ whom t may'concern:

Be it known that I, ARTHUR B. GUINNIP, a citizen of the United States,residin g at Seneca Falls, in the county of Seneca and State of New York, have invented a new and useful Bicycle-Pump, of which the following is a speciiication.

This invention relates to pumps, and particularly to hand-pumps for use in intlatin'g bicycle-tires and the like.

The object of the invention is to provide means for connecting several pump-cylinders, so as to form a single compact and useful device.

To this end the invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims.

In the drawings, Figure, 1 is a perspective Fig. 2 is a vertical longitudinal sectional view thereof. Fig. 3 is a horizontal sectional view taken through the base.

Corresponding parts are designated by like reference characters in all the figures of the drawings.

Referring to the accompanying drawings, 1 and 2 designate pump-cylinders, respectively, which are connected together by a base 3 and a head 4. The base and head are each formed from a block of wood and are clamped together upon the cylinders by means of alongitudinalbolt 5. The pump-cylinders are spaced apart a suitable distance, and the bolt is arranged between the same, having its head 6 seated in a recess 7, formed in the under side of the base, so that the latter may have a iiat underneath side and may rest iirmly upon the floor or ground. The bolt passes upward through the base and through the head 4 and is provided with a nut 8 upon its upper end, whereby the head 4 and base 3 may be clamped tightly upon the cylinders.

It will be noted that the opposite ends of each cylinder are beveled or sharpened, as at 9, so that said sharpened ends cut into the wooden base and head under the action of the clamping-bolt 5 and form an air-tight joint between the cylinders and the head and base, respec` tively.

Each cylinder is provided with a plungerrod 10, passing loosely through the head 4 and connected together above the saine by means ofy a suitable ,handle 11. The head thus forms a guide for the rods in the operation of the pump. At its lower end each rod is provided with a suitable plunger l2, and the base within the respective cylinders is dished or recessed, as at 13, to receive the lower ends of the plunger-rods at the extent of'their downward movement. As shown in Fig. 3, convergent passages 14 extend from each recess 13 to a common point and communicate with a sin gle upright discharge tube or nipple 15. The usual flexible tubing is fitted to the tube 15, whereby the air is conve'yed to the tire in the common manner.

By the construction and arrangement herein described the two pum p-cylinders are firmly connected together by a simple and substantial frame, forming a complete and compact device which discharges the air from two cylinders through a single outlet. By removing the nut 8 the frame may be taken apart and the several parts of the device may be cleaned or replaced if broken or damaged. The operating parts of the pumps may be of any preferred form and more than two cylinders may be employed, the invention residing solely in the frame whereby the cylinders are connected together.

Changes-in the form, proportion, size, and the minor details of construction within the scope of the appended claims may be resorted to Without departing from the spirit or sacriicing any of the'advantages of this invention.

Having thus described the invention, what is claimed is- 1. In combination with two or more pumpcylinders having beveled or sharpened upper and lower ends, a base and a head between which the cylinders are adapted to be held,

and a bolt or the like arranged between the IOO gether in a single device, substantially as shown and described.

2. In combination with two or more pumpcylinders, a base, and a head between which the cylinders are adapted to be held, and a bolt or the like arranged between the cylinders, connecting the base and head, and adapted to clamp the latter upon the cylinders and connect the same together in a single device, the plun ger-rods being adapted to pass loosely through the head as a guide, and a handle connecting the plunger-rods above the head, substantially as shown and described.

3. In a pump, the combination with two or more cylinders, of a base having recesses for each of the cylinders, and convergent passages communicating froln the respective recessesto a common point, a tube or nipple at ARTHUR B. GUINNIP.

Witnesses: WILLIAM 1I. HURLEY, OREN A. CooNs. 

